Controlling mechanism for weft-replenishing looms.



"P. WAGHTLER.

CONTROLLING MEGHANISM FOR WEFT REPLENISHING LOOMS.

APPLIOATION FILED JULY 9,1907.

908,362. Patented Dec. 29, 1908.

2 BHEETS-SHEET 1.

W 37i 6,5565 Ina/gnar- F. WAGHTLER. CONTROLLING MECHANISM FOR WEI-TBJJIELLIIISBEING LOOMS.

APPLICATION FILED JULY 9,1907.

Patented Dec. 29, 1908.

InJ/enior 6 Q4 Ws mum ms rvonms PE FRANZ WAGHTLER, OF GROSSENHAIN,GERMANY.

CONTROLLING MECHANISM FOR WEFT-REPLENISHING LOOMS.

Specification of Letters Patent.

Patented Dec. 29, 1908.

Application filed July 9, 1907. Serial No. 382,880.

To all whom it may concern:

Be it known that I, FRANZ WAOHTLER, a subject of the King of England,residing at Grossenhain, Saxony, Germany, have invented certain new anduseful Improvements in Controlling Mechanism for Weft-ReplenishingLooms, of which the following is a specification.

Devices for automatically replacing the consumed weft material ofweaving looms are already well known, and there are in existenceexchanging devices in which the whole shuttle is exchanged andexchanging devices in which only the weft spool is exchanged.

The present invention relates to improvements in apparatus of the kindemployed for throwing into action those devices whereby a fresh supplyof weft is effected without stopping the loom just before the weft whichis in use at the time is exhausted, the actuation of the weftreplenishing device being timed to take place by calculating the numberof picks corresponding to the length of the weft thread.

The a paratus for throwing into action weft rep enishing devicesaccording to this invention consists, in its preferred form, of a gearwith a disk slowly turned forward or advanced by toothed wheel gear,which disk, by disengaging or throwing into gear a lever, renders theexchanging device operative in a given position. According to thisinvention the plck counter is capable of being doubly advanced on theone hand, directly by the loom drive and on the other hand by the gearwhich comes into operation only during the exchanging operation, for thereason that one of the sides of the notch should be of appreciablelength to insure satisfactory operation and the single advance of theloom drive would not bring the said notch sufliciently quickly out ofreach of the lever projection to revent a second engagement of the leveran a second operation of the exchanging device.

A constructional form of device according to this invention as a pliedto a weaving loom with one shuttle is illustrated by way of example inthe accompanying drawings.

Figure 1 is a front elevation of the loom, Fig. 2 a corresponding sideelevation, Figs. 3 and 4 show the gear for throwing into action theautomatic shuttle exchanging device, Figs. 5 and 6 illustrate themechanism which operates, when thrown into action by the gear shown inthe preceding figures, to move the levers efiecting the change ofshuttle, Figs. 7 and 8 show the cams for operating the said levers.Figs. 9 and 10 are sectional views of the batten in its relation to theshuttle magazine. Figs. 11 and 12 illustrate details of the shuttle box.

The driving shaft 1 is connected b means of a toothed wheel gear to thespind e 2, the ratio of transmission being two to one. On the spindle 2is mounted an eccentric 3 connected to an upwardly directed rod 4. Thesaid rod is used for operating the gear which throws into action theshuttle exchanging device.

In Figs. 3 and 4 the gear which is mounted on a bed plate 5 secured tothe frame of the loom, is shown in elevation and in horizontalcross-section. The rod 4 engages with a bell crank lever 6 rotatable ona spindle 7 and carrying at the other end a pawl 8. The pawl engageswith a ratchet wheel 9 in such a manner-that at each revolution of thespindle 2, that is to say, at each descent of the eccentric rod 4, thereis an advance movement. With the ratchet wheel rotates the spindle 7mounted in two brackets 10 and 11 and provided with a toothed wheel 12which is keyed to its rear end. The said wheel 12 transmits the movementby means of the toothed wheel 13 to the spindle 14 arranged parallel tothe spindle 7 and supported in brackets 15 and 16. At the front end thespindle 14 is provided with a disk 17 provided with notches at the edge.The lever 18 is rotatable about a bolt or pin 19 mounted in the frame.Near the end of the lever is provided a projection 21 which rests on thedisk and is always pressed against the said disk by means of a spring 20which is secured, on the one hand, to the bed plate 5 and on the otherhand to the end of the lever. The other end of the lever is connected toa rod 22 which throws into gear the automatic shuttle exchanging device.By suitably choosing the ratio of transmission and properly setting thenotched disk, it will be easy to cause the lever 18 to oscillate after agiven number of revolutions or of strokes of the batten. The oscillationof the lever 18 will take place when the projection 21 drops into thenotch in the disk 17. As the oscillations of the batten agree with thenumber of the picks the operation of the exchanging device for theshuttles or the spool is rendered dependent on the length of the threadconsumed.

Although the length of thread on the weft spools and cops is mostly thesame for yarn of the same number the length of thread can be if desiredexactly regulated by a counting device at the spool machine. The gearfor throwing into action automatic shuttle or spool exchanging devicecan be used for any spool or shuttle exchanging devices of well knownkind. In the construction illustrated it acts on an automatic shuttleexchanging device, shown in detail in Figs. 712.

On the driving shaft 1(Figs. 1 and 2, 5 and 6), the toothed wheel 23 isarranged so that it is longitudinally adjustable but rotates with thesaid shaft. A spring 24 is continually pressing it against the framestandard 25, so that the sleeve mounted on the toothed wheel rests withits end against a boss of the standard 25. The end of the sleeve of thetoothed wheel 23 is of such shape as to form a face cam 26. When a pin27 at a right angle to the axis of the spindle is brought into the pathof the face cam 26 and the toothed wheel 23 rotates, a longitudinalmovement will take place, the spring 24 being compressed, to such' anextent that the toothed wheel 23 will engage with the tooth ed wheel 28situated below it and mounted on the shaft 29 (Figs. 1 and 2). On thetoothed wheel 28 is also mounted a disk 28 provided with a recess. Assoon as the toothed wheel 23 is moved out of reach of the recess, thedisk 28 can rotate to a sufficient extent, and the edge 28 of thetoothed wheel 23 can come to rest against the disk 28 During theengagement of the toothed wheel 23 with the toothed wheel 28, the exchange of shuttles takes place. To the shaft of the toothed wheel 28 isconnected a cam disk 29 (Fig. 7). In the cam groove of the said disktravels a roller 30 (Fig. 2) secured to the end of a bell crank lever31. To the other end of the bell crank lever is connected a rod 32 whicheffects the raising and lowering of the shuttle box 33. To the weavingloom frame is secured a magazine for receiving shuttles 34 which must beled into the shuttle box one after another. The magazine consists of twouprights of channel section 35 and 36 surrounding-the shuttle points andconneeted by means of transverse bars 37 and 38.

The magazine is closed at the base by means of a plate 39 forming aportion of an angle part arranged at the end of a bell crank lever 40(Fig. 2). The bell crank lever which is mounted at 41 on a frame in, isprovided at the other end with a rofler 42 engaging with the cam grooveof a second cam 43 (Fig. 8). The cam disk 43 is also mounted on thespindle of the toothed wheel 28. As soon as the pin 27 has been loweredinto the path of the face cam 26, and the toothed wheel 23 connected tothe toothed wheel 28, the following movement takes moved out of reach ofthe magazine.

lace. First, the bell crank lever 4'O'is moved ack in such manner thatthe plate 39 is T e contents of the magazine cantherefore fall downwardsto the extent of the thickness of a shuttle. The bottom shuttle thencomes to rest on the shuttle box wall 44.

In normal working, the bottom box cell of the shuttle box is level withthe path of the batten (Fig. 2).. During the advance movement of thebell crank lever 40 which now takes place, the angle part secured to itsend, drives the bottom shuttle into the upper box cell of the shuttlebox. After the beating up of the weft the shuttle box is lowered (Fig.10). Through two slots 46 and 45 in the back shuttle box wall 33 (Fig.11) project two gripper-arms 47 and 48 (Figs. 1, 9 and 10) connected toa trough 49 situated at the bottom. At the second oscillation of thebatten, the shuttle situated in the bottom cell, owing to the descent ofthe shuttle box effected by the rod 32 mounted on the bell crank lever31 comes within reach of the grippers 47 and 48. The bottom shuttle is,therefore held fast during the oscillation of the batten and then slidesinto the trough 49 from which it is removed. The newly introducedshuttle passes through the shed to the other side of the loom, and whileit is there, the shuttle box returns to its normal position (Fig. 2).The swells 63 and 64 (Figs 11 and 12) mounted on the shuttle box or onits front edge and controlled by springs, are extended backwards beyondtheir center of rotation and arranged in such manner that at theexchange of the shuttle they come into position shown in dotted lines inthe drawing since the right hand end of the swell 63 is first pressed bya pin secured to the shuttle box guide and secondly an arm 67 connectedto the bell crank lever 40 presses against the end 65 of the swell 64 atthe advance of the bell crank lever. In that way space is provided forthe incoming shuttle.

In order to removethe pin 27 from the face cam 26 again, the followingprovision has been made. A rod 50 (Fig. 2) surrounding with itsbifurcated end the spindle of the toothed wheel 28, is connected at theother end to a bell crank lever 51 which is pivoted at 52 on a framepin. The rod 50 is provided with a pin having a roller 53 engaging witha groove of a cam disk which is also mounted on the spindle of thetoothed wheel 28. In that way the bell crank lever 51 is controlled. Bymeans of a rod 54 connected to its other end, and engaging with itsbifurcated end with a second bell crank lever 55, the said lever 51 actson the latter in such manner that the pin 27 surrounded by the other endof the bell crank lever 55, is raised or lowered. In order to maintainthe pin in the normal, that is to say, in the raised position, there isconnected to the bell crank lever 55 a bar 56 lprovided with a downwardprojection 57. his projection, as soon as the pin 27 is raised, engagesbehind a ta pet or projection 58 secured to the frame bo t 52 of thebell crank lever 51. As soon, therefore, as the bar in question islifted from the projection or tappet 58, the pin 27 is again oweredunder spring action and the change of shuttle begins. The rod 50 afterthe exchange of the shuttle has been completed raises the pin 27 orbrings the projection 57 again into engagement with the projection 58 bymeans of the cam disk 52 and the roller 53. In this way the exchange ofshuttles is started by the removal of the arm 56 from the tappet 58. Theremoval is efiected by means of a rod 22 which on the one hand surroundsa pin on the bar and is secured on the other hand to the lever 18sliding on the notch disk of the gear.

A regular continuous advance of the gear is effected from the drivingspindle or the spindle 32 by means of the rod 4, so that, for

. instance, at each one-hundredth stroke of the batten, the lever 18 canbe caused to move, that is to say, the shuttle exchanged. In order toinsure that the oscillation of the lever 18 should take place after the98th pick, a rod 60 is coupled by means of a driver to the spindle 29 ofthe toothed wheel 28 (Figs. 1 and 2) which is rotated only during theexchange of shuttles, the said rod 60 being connected or pivoted to abell crank lever 61 rotatably mounted on the spindle 14 of the gear. Thebell crank lever is provided at its other end with a ratchet pawl 62engaging with the teeth of a ratchet wheel 63 connected to the notcheddisk 17. During the exchange of shuttles, the ratchet pawl 62 efiects anadvance to the extent of two teeth. Of course provision is made foreffecting the advance only while the ratchet pawl 8 is out of engagementwith the ratchet wheel 9.

What I claim as my invention and desire to secure by Letters Patentis 1. In a weft replenishing loom, a shuttle exchanging device, ratchetgear advanced from the loom drive, a disk advanced by said ratchet,another disk 0 erated by the first disk, a notch in said last-mentioneddisk, a lever operated by said notch, a projection upon said lever, asecond pawl, and means connected with the exchanging device for movingsaid second pawl, whereby said notch is brought out of reach of saidprojection, for the purpose specified.

2. In a weft replenishing loom, a shuttle exchanging device, a rod,means upon the loom shaft for reciprocating said rod, a pawl connectedto said rod, a ratchet disk advanced by said pawl, gearing rotatedthereby, another disk advanced by said gearing, a notch in saidlast-mentioned disk, a pivoted lever, a projection thereon and adaptedto enter said notch, a spring on said lever, a rod connected to saidlever at its end opposite said spring, means attached to said rod foroperating the gear of the shuttle exchanging device, a second pawl, andmeans connected with said gear for operating said second pawl, wherebysaid notch is brought out of reach of said projection.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

FRANZ WAOHTLER.

Witnesses OTTO VOGT, HUGO HUMMER.

